Site stats widget in Dashboard appears blank on my sites randomly (say, 2 in 3 times - after refresh sometimes it comes back). All works fine when I go through "View all" to the Stats page.

I have this issue on Windows and on Mac; on Firefox, Safari and Chrome; from different locations; and also on sites hosted by different providers. I tried to clear the browser cache, also uninstalled and removed Jetpack completely and brought it fresh from WordPress.org. Nothing helps - and it's pretty annoying.

Surprisingly I didn't spot anybody complaining. Is it something I do wrong?